Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) (USD $)
12 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Nov. 15, 2012
Oct. 26, 2011
Stockholders' Equity Note [Abstract]          
Amount authorized for repurchase of common stock       $ 50,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1 $ 50,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
Shares repurchased 463,780us-gaap_TreasuryStockSharesAcquired 68,816us-gaap_TreasuryStockSharesAcquired 802,722us-gaap_TreasuryStockSharesAcquired    
Average purchase price (in dollars per share) $ 57.97us-gaap_TreasuryStockAcquiredAverageCostPerShare $ 72.71us-gaap_TreasuryStockAcquiredAverageCostPerShare $ 30.28us-gaap_TreasuryStockAcquiredAverageCostPerShare    
Aggregate price of shares repurchased $ 26,884,000us-gaap_TreasuryStockValueAcquiredCostMethod $ 5,003,000us-gaap_TreasuryStockValueAcquiredCostMethod $ 24,304,000us-gaap_TreasuryStockValueAcquiredCostMethod